<template>
  <div class="my-son">
    <h3>{{ msg }}</h3>
  </div>
</template>

<script>
export default {
  created () {
    console.log('son里打印this', this)
  },
  data () {
    return {
      msg: 'son的msg'
    }
  }
}
</script>

<style scoped>
.my-son {
  width: 300px;
  height: 300px;
  border: 1px solid #000;
}
</style>
